biology unit 5
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Bell Ringer: What are some major differences between the plant and animal cell?
1. Bell Ringer
2. Hand out test grades. Last day for late or make-up work is next Thursday!
3. Lab: Animal Cell
4. Homework: Read article
Class fees need to
be paid by the end
of the 1st 9 weeks!
Either cash, check or
fee waiver!
Bell Ringer: Cells undergo plasmolysis after drinking sea water. What is plasmolysis?
1. Bell Ringer
2. Lab: Finish animal cell and begin plant cell lab
3. Unit 5-1 Notes if time
4. Homework: Research a disease that is caused by a malfunction by a cellular organelle; create a power point (more info to follow); disease due tomorrow.
Class fees need to
be paid by the end
of the 1st 9 weeks!
Either cash, check or
fee waiver!
Bell Ringer:What is the difference between a prokaryote and eukaryote cell?
1. Bell Ringer/Check hmwk
2. Competition Activity
3. Unit 5-1 Notes
4. Observing a cell membrane
5. Handout Progress Report (unofficial)
www.freewebs.com/nehskelley
Bell Ringer: The cell membrane is said to be a “phospholipid bi-layer”. What does this mean?
1. Bell Ringer/check progress reports
2. Cell Structure
3. Unit 5-2 Notes (quiz on Thursday)
4. Computer Activity: Cell Sweet 16
5. Reminder: Cell organelle disease due Wednesday, Cells Alive due tomorrow
All late, make-up and retakes must be in by Thursday, Oct.9! I will be here after school on Tuesday from 2:30-3:30
Bell Ringer: What do the terms hydrophilic and hydrophobic mean?
1. Bell Ringer/Collect Hmwk “Cells Alive”
2. Competition Activity
3. Unit 5-3 Notes (Quiz on Thursday)
4. Cell Membrane Activity
5. Due FRIDAY!!: Website PPT
All late, make-up and retakes must be in by Thursday, Oct.9! I will be here after school on Tuesday from 2:30-3:30
http://www.wisc-online.com/objects/index_tj.asp?
objID=AP11403
Bell Ringer: if “cyt” means “cell”, what do you think the following mean? Cytology, exocytosis, endocytosis and cytopathogen
1. Bell Ringer
2. Competition Activity
3. Unit 5-4 Notes (Quiz Tomorrow!)
4. Observing a Cell Membrane Activity
5. Power Point due Friday!
All late, make-up and retakes must be in by Thursday, Oct.9!
Bell Ringer: The cell membrane is “selectively permeable” what does this mean?
1. Bell Ringer
2. Unit 5 Quiz
3. Begin Lab on Selectively Permeable Membrane
All late, make-up and retakes must be in today!
Bell Ringer: what is the difference between osmosis and diffusion?
1. Bell Ringer/Collect2. Competition Activity
3. Computer Webquest (due today)4. Friday Drawing
Topic: Cell Structure Unit 5-1
Read over Ch.7 in text
Scientists contributing to the cell theory:
-Hooke: first to use light microscope, looked at cork, called chambers “cells” (1665)
-van Leeuwenhoek: first to observe organisms in pond water (1674)
-Schleiden: concluded all plants made of cells (1838)
-Schwann: concludes all animals are made of cells (1839)
-Virchow: proposed that all cells come from existing cells (1855)
Topic: Cell Structure Unit 5-1
Cell theory:
-all living things are composed of cells
-cells are the basic units of structure and function in living things
-new cells are produced from existing cells
Prokaryotes:
-have cell membrane and cytoplasm, but NO NUCLEUS
-all bacteria
Topic: Cell Structure Unit 5-1
-Eukaryotes:
-have a nucleus, cell membrane and cytoplasm
-have specialized organelles
-include all plant, animal, fungi and many microbes
Topic: Cell Structure Unit 5-2
Cell Structures:
-cell wall: found in many organisms including plants, algae, fungi and nearly all prokaryotes
-main function is to provide support and protection
-made from fibers of carbs and proteins (plant cell: cellulose)
-nucleus: controls most cell processes and contains hereditary info DNA
-chromatin: uncoiled chromosomes (coils when cell is about to divide)
Topic: Cell Structure Unit 5-2
Nucleolus: dense part of nucleus, makes ribosomes
Cytoskeleton: network of protein filaments that helps cell maintain its shape; also involved in cell movement
-microtubules: hollow tubes that can be “tracks” to move things
-microfilaments: long thin fibers that function in movement and support
Topic: Cell Structure Unit 5-4
Ribosomes: makes proteins (found on rough ER) gets directions from RNA during protein synthesis
Endoplasmic Reticulum: components of the cell membrane are assembled and some proteins are modified
Golgi Apparatus: (complex) enzymes found here attach carbs and lipids to proteins
Lysosomes: filled with enzymes, break down compounds to be used as food particles
Topic: Cell Structure Unit 5-4
Vacuoles: used for storage (if small, sometimes called vesicles)
Chloroplasts: use energy from sunlight to assemble water and carbon dioxide into glucose or energy rich compounds
Mitochondria: use oxygen and water to produce ATP, the energy molecule of cells
-do plants need mitochondria?
Yes! Until a plant develops chloroplasts, it needs ATP to grow